Thesis presented to the Faculty of the Graduate School of the University of Pennsylvania, May 1918, in partial fulfilment of the requirements for the degree of Doctor of Philosophy In the assembling of material so widely scattered and so long unsought either by students or by collectors, it has been necessary for me to depend in some measure on the efforts of others who have been most generous with their help and assistance. I desire to record my gratitude especially to my Father and my Mother, without whose unfailing sympathy and co-operation this work could not have been done: and to Mrs. C. Francis Osborne of Philadelphia, Miss Sallie Shepherd of Norfolk, Virginia, and Miss Flore…
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